qbe

commit 55a1522b555c3b9f8745285e9ce3009c2f9b30ff
parent e91d12158122b23271ff49de8977c92fef7f3908
Author: Bor Grošelj Simić <bor.groseljsimic@telemach.net>
Date:   Wed, 19 Jan 2022 15:03:59 +0100

check for fopen() errors for output file

Diffstat:
M
main.c
 | 
7
++++++-

1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/main.c b/main.c
@@ -126,8 +126,13 @@ main(int ac, char *av[])
 				}
 			break;
 		case 'o':
-			if (strcmp(optarg, "-") != 0)
+			if (strcmp(optarg, "-") != 0) {
 				outf = fopen(optarg, "w");
+				if (!outf) {
+					fprintf(stderr, "cannot open '%s'\n", optarg);
+					exit(1);
+				}
+			}
 			break;
 		case 't':
 			for (tm=tmap;; tm++) {